Internal-combustion engine



C. L. MAcVEY.

INTERNAL COMBUSTIO NNNNNN E. APPLICATION HLEDsriPTA 1111111 9.

, 43 SHEETS-SHEET 2.

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[im Arm/mers' yad vnarran stares onlinr-ns LLOYD MACVEY, orVsnnnviiron'r, LOUISIANA.'

iNTnRivAL-coiviBUsrioN l ENGINE.

Specification of Letters atent. l

Patented-Mar. i1, 192i.

Application inea. septemberee, 1919. vserial Noleeea.

To aZZwzom t may concern."

Be it known that I, CHARLES L. MAGVEY, a citizen of the United States,residing at Shreveport, lin the parish of Caddo and State of Louisiana,have invented new and useful Improvements in Internal-CombustionEngines, of which the following is a specification. j

My invention relates-to improvements in internalV combustion engines ofthe rotary valve type. ,I Y

in important object of the invention is to provide a simplifiedconstruction of rotary valve by use of which the four functions ofintake, compression, firing and exhaust, may be performed upon onecomplete revolution of the valve.

A further object of the invention is to provide an internal combustionengine of the above mentioned character having gravity operated meansfor lubricating the rotary valve, and for feeding' the used oil from thevalve to the interior of the cylinder for lubricating the piston, thespent oil being subsequently exhausted from the cylinder.

A further object cf the invention is to provide means whereby the rotaryvalve may expand longitudinally and circumfer entially without bindingaction. A

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of lthis specification andin .which like numerals are employed to designatelike parts throughoutthe same,

Figure 1 is a plan View of an engine embodying my invention, with thecap of the valve housing removed and the rotary valve removed, V

F ig. 2 is a vertical longitudinal section taken on line 2 2 of Fig. 1,

Fig. 3 is a transverse sectional view taken on line 3-3 of Fig. 1, withthe valve in place,

Fig. i is a front elevational view showing the valve timing,

F ig.- 5 is a plan view of the valve housing cap,

Fig. 6 is a perspective view of a rotary the cylinders to function inproper order.

valve.

In the drawings, wherein for the `purvpose of illustration is shown apreferred embodiment of my invention, the numeral 10 designates thecylinders 'of an internal combustion engine, whichjare shown as verticalfor the purpose ofillustration. A piston. 11 is mounted-to reciprocatewithin each cylinder and is connected with a pitman 12,

connected with a crank shaft A18.

' There may be any suitable numberof cylinders, .and in the event thatthere are a plurality of them, thesame vmay be cast in a Single block,providing a headl. Spark plugs'l are carried ,bythehead and'project intothe top of the cylindersV vA lvalve housing is secured'to the cylindersor cylinder block and is designated as a whole by the numeral 17 Thishousing embodies an inner section 18, preferably cast integral with thecylinder block, The

numeral 19 designates an outer section or cap, secured to the innersection 1S by bolts 20, carrying nuts 21, zwith spring washers 22arranged beneath ,the nuts. frlh'e'fiiiiction of these spring washers isto permit of a slight outward movement ofthe section or cap 19 upon thecircumferential eXpansion of the rotary valve, to be described.

The sections 18 vand 19 lare provided with recesses 28, which aresemi-circular in cross section andare infregistratio'n to form acylindrical chamber, having both ends open, andadapted for the receptionof a rotary solid valve 24.-. This rotary solid valve,

which may betermed a rotary ,shaft valve, is provided nea-r one endwithan annular flange 25, rotatable within an annular groove 26, formedinthe housing 'sections 18 and 19. The. function of this flange and grooveis to hold the rotary shaft valve against bodily longitudinaldisplacement, but to permit of the longitudinal expansion of the same,without binding action, as the opposite end of the saine is free fromrconnection. 27, preferably secured to its end, near the Harige 25, thisgear being connected with the crank shaft of the engine to be driven ata suitable speed.

The rotary sha-ft valve 24 is provided with a plurality of twin unitsinlet and eX- haust ports 28 and 29, there beingv as many vunits asthere are cylinders, and the units being Varranged in propercircumferential adjustment upon the shaft valve, to cause .up one fourthof the circumferential spacev The shaft valve is driven by a gearv ofthe shaft valve, the inlet port 28 taking up one fourth of thecircumferential space, andthe exhaust port 29 taking up one fourth ofthe same. The inlet port starts at the end line of the exhaust port,thereby leavingytwo fourths of the circumferential space of the shaftvalve solid, which solid space serves to close the passages to thecylinder, during the twostages of compression and explosion. It is thusseen that I have provided a twin unit inlet and exhaust ports arrangedat 90,- and occupying two fourths of the circumferential area of theshaft valve, the remaining two fourths being solid, with the result thatupon a coniplete rotation of the shaft valve the four functions of theengine, to wit, intake, compression,V firing, and exhaust will beperformed.

Each cylinder 10 has a relatively wide common port 30, leading into theupper end thereof, and adapted to be placed alternately intocommunication with supply and exhaust ports or passages 31 and 32,formed in the housing section 18. The inlet port 28 is adapted toestablish communication between the ports 30 and 31, while the exhaustport 29 may establish communication between ports 30 ,and 32. The chargeis fed to the intake port 31 by any suitable means,

I provide gravity operated means to supply oil or other lubricant to therotatable shaft valve, comprising a suitable number of spaced oil supplypipes 33, which extend. through vertical openings in the top of thesection or cap 19, and deposit oil upon the periphery of the shaftvalve. The construction of the shaft valve is such that it permanentlyretains the pressure within the cylinders from the flow of oil, Whichenables the use of the Y gravity feed which effects a continuous flow ofoil upon the top of the shaft valve. I omit any device to remove thespent oil from the shaft valve,vas tlieksharp edges of the lports 28yandL 29 will pick up the refuse oil so that-the same is next drawn intothe cylinders, upon the intake strokes of the pistons, furnishinglubrication to the cylinder walls and pistons, and after the explosionin the cylinders, the burnt cil is exhausted into the atmosphere.

In View of the. foregoing description it is thought that theconstruction and operation, of 'my engine should be fully understood, itbeing understood that certain changes in v the shape, size, andarrangement of parts,

may be resorted to without departing from the spirit of my invention, orthe scope of `the subjoined claim.

Having `thus described my invention, I claim Y In an internalVcombustion engine of the ,character describe-2l, a plurality ofcylinders,

pistons arranged therein, a housing secured tothe cylinders and havingtwin units of inlet 'and exhaust ports, said housing embodying a can andhaving an interior annular groove, yielding means to hold the cap in place, a rotary shaft valve arranged with- Vshaft valve.

CHAS. LLOYD MACVEY.

